You be ready and do exactly as I say.

5 seconds sound clip from the Braveheart (1995) movie soundboard.

You can hear this line at 01:21:39 in the Blu-ray version of the movie.

Quote context

[...]

- Do that and your men shall live. Do it not and every one of you will die today.

- You are outmatched. You have no heavy cavalry. In two centuries, no army has won...

- I'm not finished!

- Before we let you leave, your commander must cross that field, present himself before this army, put his head between his legs, and kiss his own arse.

- I'd say that was rather less cordial than he was used to.

- You be ready and do exactly as I say.

- On my signal, ride round behind our position and flank them.

- We must not divide our forces.

- Do it and let the English see you do it.

- They'll think we run away.

[...]